POSEIDON 3755 Setup guide

REPAIR INSTRUCTIONS SECOND STAGE DEMAND VALVE
3755 - Second stage
TRITON
1.0:E97
DIFFUSER
LOW PRESSURE VALVE
DIFFUSER
SWIVEL
LOW PRESSURE HOSE
COVER FOR VALVE
HOUSING WITH
PURGE BUTTON

SECOND STAGE
3755
Removal:
1. Disconnect the low pressure
hose from the second stage with
a 15 mm open wrench. Remove
the o-ring (14) with an o-ring
remover.
Remove the securing clip (13).
2. Remove the swivel (12).
3. Remove the o-rings (11) with an
o-ring remover. Make sure that
the sealing surfaces are not
damaged.
4. Remove the diffusers (8). Press
the catches and push out the
diffuser.
TRITON
1.0:E98

SECOND STAGE
3755
Removal:
1. Cut off the locking strap (9) with
cutting pliers. Remove the
mouthpiece (10).
2. Remove the cover (6)
3. Remove the diaphragm (1) with
an o-ring remover. Make sure
that the sealing surfaces are not
damaged.
4. Remove the exhaust valves (7).
TRITON
1.0:E99

1.0:E100
TRITON
Removal:
Remove the servo valve (2) with
removal tool (no 3601) see fig.
Be careful so that the holders do
not break.
1. Press down the removal tool
carefully so that the holders bend
inwards and the serve valve
“pops up”.
2. Thereafter press up the servo
valve with a screwdriver, see fig.
3. Remove the valve piston (3) from
the servo valve.
3
2
3601

SECOND STAGE VALVE
3755
When servicing the regulator
the following parts should be
replaced:
(see chapter servicekit)
Before assembly check
the following:
1. Diaphragm (1) and exhaust
valves (7). Check the sealing
surface to see if it is even and
uncracked.
2. Valve housing (4). Make sure
that the sealing surfaces are free
from defects and that the track
for the diaphragm is absolutely
clean.
3. The mouth-piece (10). Make
sure that there are no cracks.
4. Low pressure hose (15). Check
to make sure that the sealing
surface is undamaged, and that
the rubber does not show any
flaws.
TRITON
1.0:E101

TRITON
1.0:E102
SECOND STAGE
3755
Assembly
Installing o-rings in the swivel
connection.
Place the fixtures according to fig. 1.
Install an o-ring in the fixture.
Press down the o-ring in the track of the
swivel with tool B.
Remove the fixtures, press out the lower
fixture with the o-ring remover through
the hole in the bottom of the swivel.
Mount the upper o-ring in the track.
Assembly of low pressure valve
1. Place the valve piston in the low
pressure valve guide.
2. Mount the servo valve and press
firmly (until you hear a click).

SECOND STAGE
3755
Assembly:
1. Lubricate the inside of the
swivel (12) and press it on the
second stage.
2. Press in the securing clip (13).
Install the o-ring (14) on the low
pressure hose. Lubricate the o-
ring (14) and the thread at the
swivel (12). Screw the low
pressure hose on the swivel.
Tighten with a 15 mm open
wrench.
3. Test the low pressure valve for
leaks according to chapter
“Testing and adjustment of
regulator Triton”.
4. Install the exhaust valves (7) and
the diaphragm (1). Press the
edge of the diaphragm into the
groove of the valve housing. Use
an o-ring remover.
TRITON
1.0:E103

1. Install the cover (6). Put the
lower part of the cover against
the valve housing. Press it on.
2. Install the mouth piece (10) and
the locking strap (9). Tighten
and cut off locking strap with
plastic band pliers.
3. Install the diffusers (8). Make
sure the catches are fastened.
TRITON
1.0:E104